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Mark Cuban Says You Should Keep a Cash Cushion - But Most People Are Making This Savings Mistake

Mark Cuban's cash cushion advice is about protection, but the account you choose can change how much that money earns.

By Laura Hohenstein , Edited by Melinda Sineriz, ABFP®

Updated Oct. 20, 2026

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$25,000 at a 4.00% annual percentage yield earns about $1,000 over one year, or roughly $83 a month.
The same $25,000 in a checking account that pays 0.00% earns nothing, even while it feels safely parked.
That account choice creates a gap of about $1,000 a year, or roughly $83 a month, on the same cash cushion.
At the national average savings rate of 0.38% (as of 06/15/26), $20,000 earns $76 a year. The same balance could earn up to nine times more with a SoFi Checking and Savings account. See SoFi®'s current rate.

Having cash set aside feels good for a reason. The car acts weird, the water heater gets dramatic, or work gets uncertain, and money in the bank turns a crisis into a problem you have a shot at solving.

Mark Cuban's cash cushion advice starts from that same place: cash reserves matter when a job loss, move, or other emergency hits. The detail worth a closer look is where that money sits, especially when high-yield savings accounts paying 4.00% APY are showing up in current market listings (as of 10/01/26).

The useful move is separating cash that belongs in checking from emergency money that can sit in a high-yield savings account. Same protection goal. Better account placement.

The mistake is the account

The common mistake is treating a cash cushion and a checking account balance as the same thing. A financial buffer is the money you keep available so life doesn't knock you straight into credit card debt or panic borrowing.

But checking is mainly built for transactions. If suitable emergency money sits there earning 0.00%, the account choice quietly costs you interest every month.

The fix doesn't require taking stock market risk with emergency money. It means asking whether part of your reserve belongs in a high-yield savings account, where the money stays cash and could earn a stronger rate.

Cuban's point is protection

Cuban's point is protection: he has said people need at least six months of income if they get fired, need to move, or something goes wrong, and later advocated having a year of expenses saved during uncertain times.

That principle is solid. A buffer helps when income drops, a bill hits early, or a repair can't wait until payday.

The account choice is a separate decision. Keeping cash accessible doesn't mean every dollar has to sit in the account where your debit card lives, especially when a savings account might be reachable with a transfer and still pay meaningful interest.

We did the research for you. Having your checking and savings accounts with the same financial institution can make money management a lot simpler. SoFi® was our 2026 award winner for Best Checking and Savings Combo because it delivers on interest and additional features. For example, you could earn up to 4.40% APY on your savings balance with direct deposit. (3.30% APY¹ with +1.10% APY Boost) for up to 6 months on new accounts.² SoFi also offers more special features than any other account combo we looked at: No account fees: No overdraft fees.³ No minimum balance fees. No monthly fees.⁴ Get paid up to two days early: Feel the magic of payday up to two days earlier — automatically — when you set up direct deposit.⁵ Access additional FDIC insurance up to $3M: Typically, single-member deposit accounts are federally insured up to $250,000. With SoFi, FDIC insurance up to $3 million on deposits is available through a seamless network of participating banks.⁶

Open an account with SoFi here.

Keep bill money in checking

Start with the money that shouldn't move. Rent, mortgage payments, utilities, groceries, insurance drafts, credit card payments, and anything already scheduled for automatic withdrawal belong where the payment can clear without drama.

Checking is useful because it's connected to your everyday financial life. Debit cards, online or mobile bill pay, checks, cash withdrawals, and automatic payments are common ways people use transaction accounts, so next week's grocery money and next month's mortgage payment don't belong behind a bank-to-bank transfer.

A practical cutoff helps: cash you expect to spend before the end of the month likely stays in checking. That cash isn't wasted. It's working as payment money, not savings money.

Move the reserve money first

Once the bill money is separated, look at the cash left over. That's where a high-yield savings account could fit: emergency reserves, a one-year insurance deductible fund, holiday money, or a planned vacation fund with a clear date.

Money already committed to something happening very soon needs more caution. If you're closing on a home in three weeks, paying tuition next Friday, or writing a contractor check this month, convenience might matter more than squeezing out a little extra interest.

The far end matters, too. Money you won't touch for five years or more could be too long-term for a savings account, because savings account rates can change after the account is opened and long-term goals often need a different plan.

So the sorting rule is simple:

Keep this month's spending money in checking.
Put flexible reserve money in high-yield savings when the transfer timing works.
Treat five-year money as a separate planning decision.

Your money is already saved. Now see how it could be earning you hundreds per year.

What 4.00% actually earns

Say you have $25,000 set aside and find a high-yield savings account paying 4.00% APY, which recent market listings show is achievable (as of 10/01/26). Using simple one-year math, that balance earns about $1,000 over one year before getting into compounding details.

The math is plain:

$25,000 × 0.04 = $1,000

That works out to roughly $83 a month. That probably won't change your life, but it can buy a tire, cover a utility bill, or pad the reserve without you adding another dollar from your paycheck.

If you have	One year at 0.38% APY (national average)	One year at 3.80% APY (example)	You are leaving behind
$10,000	$38	$380	$342
$25,000	$95	$950	$855
$40,000	$152	$1,520	$1,368
$50,000	$190	$1,900	$1,710
$100,000	$380	$3,800	$3,420

To swap in your own savings account balance, multiply your savings amount by 0.04. A $10,000 cushion at 4.00% earns about $400 over one year, while a $40,000 cushion at 4.00% earns about $1,600 over one year. Same formula, different balance.

Transfers are the real tradeoff

The honest drawback is timing. Many external bank-to-bank transfers move over ACH, and standard ACH transfers typically take one to three business days, so high-yield savings works best for money you can wait a little while to use, not money you need at the cash register in 10 minutes.

That doesn't make the money unreachable. It means your emergency plan should match the account setup: keep immediate spending money in checking, then use high-yield savings for the part of the reserve that could wait through a transfer.

Insurance deserves a direct check, too. For deposit insurance, confirm whether the bank or credit union itself is covered; FDIC and NCUA rules generally protect up to $250,000 per depositor, per insured bank or credit union, per ownership category.

Account details also vary. Savings account disclosures can include minimum opening deposits, minimum balance rules, monthly maintenance fees, and limits around withdrawals and transfers, and providers can charge fees for too many withdrawals, too large a withdrawal, or going below a minimum balance.

The rate tradeoff is flexibility instead of certainty. A savings account paying 4.00% APY now might pay less later if market rates fall. If you need a fixed rate for a fixed period, that's a different comparison, but your emergency reserve usually needs access first.

Before moving reserve money, check four things:

How quickly transfers to your checking account usually arrive.
Whether the institution itself is federally insured.
Whether monthly fees or minimums would eat into interest.
Whether the rate is variable and easy to monitor.

Bottom line

Cuban's cash cushion idea works because protection matters. The savings mistake is letting protected money sit in the wrong account when it could stay in cash and earn more.

For $25,000, a high-yield savings account paying 4.00% APY earns about $1,000 over one year. Keep bill money and instant-spend money in checking, then look at the rest of your cash buffer and ask whether high-yield savings is the better parking spot.\

Would You Spend Ten Minutes for $1,465?

That's roughly the year's difference on $40,000 between the national average and the up-to-4.00% rates available now. And ten minutes isn't a figure of speech. You just provide some information, like your name, address, Social Security number, and the account your deposit money's coming from. But rates are variable and follow the market, which is why the only number worth acting on is today's. Compare the current top accounts here.

Bank/Institution	APY Annual Percentage Yield	Bonus Offer	Open Account	Bonus Offer
AWARD WINNER Best Checking and Savings Combo
5.0 FinanceBuzz writers and editors score products and companies on a number of objective features as well as our expert editorial assessment. Our partners do not influence our ratings.	4.40 % APY With $0 min. balance² <p>Earn up to 4.40% Annual Percentage Yield (APY) on one SoFi Savings account with a 1.10% APY Boost (added to the 3.30% APY as of 10/20/26) for up to 6 months. Open your first SoFi Checking and Savings account and receive eligible direct deposits OR qualifying deposits of $5,000 every 31 days by 12/31/27. Rates are variable, subject to change. Terms apply at <a href="https://www.sofi.com/banking/#4">sofi.com/banking#4</a>. SoFi Bank, N.A. Member FDIC.</p>	Limited-Time Offer: +1.10% boost on Savings APY to up to 4.40% for up to 6 months on new accounts² <p>Earn up to 4.40% Annual Percentage Yield (APY) on one SoFi Savings account with a 1.10% APY Boost (added to the 3.30% APY as of 10/20/26) for up to 6 months. Open your first SoFi Checking and Savings account and receive eligible direct deposits OR qualifying deposits of $5,000 every 31 days by 12/31/27. Rates are variable, subject to change. Terms apply at <a href="https://www.sofi.com/banking/#4">sofi.com/banking#4</a>. SoFi Bank, N.A. Member FDIC.</p> + $50 or $400 Bonus with direct deposit.¹ <p>New and existing Checking and Savings members who have not previously enrolled in Direct Deposit with SoFi are eligible to earn a cash bonus of either $50 (with at least $1,000 total Eligible Direct Deposits received within 25 calendar days of your first Eligible Direct Deposit of $1 or more) OR $400 (with at least $5,000 total Eligible Direct Deposits received within 25 calendar days of your first Eligible Direct Deposit of $1 or more). Cash bonus amount will be based on the total amount of Eligible Direct Deposit received within 25 calendar days of your first Eligible Direct Deposit of $1 or more. If you have satisfied the Eligible Direct Deposit requirements but have not received a cash bonus in your Checking account, please contact us at 855-456-7634 with the details of your Eligible Direct Deposit. Direct Deposit Promotion begins on 5/15/2026 and will be available through 12/31/2026. Full terms at <a href="https://www.sofi.com/banking/">sofi.com/banking</a>. SoFi Checking and Savings is offered through SoFi Bank, N.A., Member FDIC. SoFi members with Eligible Direct Deposit can earn 3.30% annual percentage yield (APY) on savings balances (including Vaults) and 0.50% APY on checking balances. There is no minimum Eligible Direct Deposit amount required to qualify for the 3.30% APY for savings (including Vaults). Members without Eligible Direct Deposit will earn 0.80% APY on savings balances (including Vaults) and 0.50% APY on checking balances. Interest rates are variable and subject to change at any time. These rates are current as of 9/23/26. Fees may reduce earnings. Additional information can be found at <a href="https://d32ijn7u0aqfv4.cloudfront.net/wp/wp-content/uploads/raw/SoFi-Bank-Rate-Sheet-September-23-2026.pdf">http://www.sofi.com/legal/banking-rate-sheet</a>.</p> Terms apply.	Learn More on SoFi's secure website Member FDIC	Limited-Time Offer: +1.10% boost on Savings APY to up to 4.40% for up to 6 months on new accounts² <p>Earn up to 4.40% Annual Percentage Yield (APY) on one SoFi Savings account with a 1.10% APY Boost (added to the 3.30% APY as of 10/20/26) for up to 6 months. Open your first SoFi Checking and Savings account and receive eligible direct deposits OR qualifying deposits of $5,000 every 31 days by 12/31/27. Rates are variable, subject to change. Terms apply at <a href="https://www.sofi.com/banking/#4">sofi.com/banking#4</a>. SoFi Bank, N.A. Member FDIC.</p> + $50 or $400 Bonus with direct deposit.¹ <p>New and existing Checking and Savings members who have not previously enrolled in Direct Deposit with SoFi are eligible to earn a cash bonus of either $50 (with at least $1,000 total Eligible Direct Deposits received within 25 calendar days of your first Eligible Direct Deposit of $1 or more) OR $400 (with at least $5,000 total Eligible Direct Deposits received within 25 calendar days of your first Eligible Direct Deposit of $1 or more). Cash bonus amount will be based on the total amount of Eligible Direct Deposit received within 25 calendar days of your first Eligible Direct Deposit of $1 or more. If you have satisfied the Eligible Direct Deposit requirements but have not received a cash bonus in your Checking account, please contact us at 855-456-7634 with the details of your Eligible Direct Deposit. Direct Deposit Promotion begins on 5/15/2026 and will be available through 12/31/2026. Full terms at <a href="https://www.sofi.com/banking/">sofi.com/banking</a>. SoFi Checking and Savings is offered through SoFi Bank, N.A., Member FDIC. SoFi members with Eligible Direct Deposit can earn 3.30% annual percentage yield (APY) on savings balances (including Vaults) and 0.50% APY on checking balances. There is no minimum Eligible Direct Deposit amount required to qualify for the 3.30% APY for savings (including Vaults). Members without Eligible Direct Deposit will earn 0.80% APY on savings balances (including Vaults) and 0.50% APY on checking balances. Interest rates are variable and subject to change at any time. These rates are current as of 9/23/26. Fees may reduce earnings. Additional information can be found at <a href="https://d32ijn7u0aqfv4.cloudfront.net/wp/wp-content/uploads/raw/SoFi-Bank-Rate-Sheet-September-23-2026.pdf">http://www.sofi.com/legal/banking-rate-sheet</a>.</p> Terms apply.
4.9 FinanceBuzz writers and editors score products and companies on a number of objective features as well as our expert editorial assessment. Our partners do not influence our ratings.	3.64 % APY With $1 min. balance⁷ <p>APY means Annual Percentage Yield. APY is accurate as of as of 09/01/26. This is a variable rate account, Interest rate and APY may change after initial deposit. Minimum initial deposit to open account and earn interest is $1.00.</p>	Limited-Time Offer: Use code STACK to earn a cash bonus based on your savings balance. Earn up to $50 for $10,000, $125 for $25,000, $250 for $50,000, $500 for $100,000, or $1,000 for $200,000 or more. Visit site for full details.⁸ <p>New customers only. Earn a cash bonus (the "Welcome Bonus") when you deposit and maintain funds with partner banks on the Raisin platform. Customers will receive a Welcome Bonus of $40 for depositing between $10,000 and $24,999; $100 for depositing between $25,000 and $49,999; $200 for depositing between $50,000 and $99,999; $425 for depositing between $100,000 and $199,999; and $900 for depositing $200,000 or more. If the Qualifying Deposit balance declines at any time during the maintenance period below the minimum required for a bonus tier, the customer will be placed in the bonus tier corresponding to the lowest Qualifying Deposit balance maintained during that period. </p><p>Savings + CD Boost: Customers eligible for the Welcome Bonus may earn an additional bonus by opening a product in a second product category. To qualify, customers must deposit at least $1,000 into the secondary product category within 14 days of their initial deposit and maintain balances over $1,000 in both categories through 90 days from the initial deposit date.</p><p>For the purposes of this promotion, High-Yield Certificates of Deposit constitute one product category; No-Penalty CDs and Callable CDs constitute a second product category; and Savings Accounts (including Money Market Deposit Accounts, High-Yield Savings Accounts, and Rate Lock Savings Accounts) constitute a third product category. Savings + CD Boost eligibility is determined by your Welcome Bonus tier: customers depositing between $10,000–$24,999 receive an additional $10; $25,000–$49,999 receive an additional $25; $50,000–$99,999 receive an additional $50; $100,000–$199,999 receive an additional $75; and $200,000 or more receive an additional $100. </p><p>The Savings + CD Boost is optional and paid in addition to the Welcome Bonus. To qualify for the Welcome Bonus and Savings + CD Boost, your first deposit must be initiated between September 1, 2026, and October 31, 2026, by 11:59 PM ET, and the promo code STACK must be entered at the time of sign-up. Only funds deposited within 14 days of the initial deposit date and maintained with partner banks on the Raisin platform for 90 days of the initial deposit date will be eligible for the Welcome Bonus and Savings + CD Boost. Bonus cash will be credited directly to your Cash Account within 30 days of meeting all qualifying terms. This offer is available to new customers only, is non-transferable, and may not be combined with any other bonus offers. Raisin may modify or end this offer at any time and may withhold or revoke bonuses in cases of fraud, abuse, or violation of these terms or Raisin’s Terms of Service.</p>	Learn More on Raisin's secure website Member FDIC	Limited-Time Offer: Use code STACK to earn a cash bonus based on your savings balance. Earn up to $50 for $10,000, $125 for $25,000, $250 for $50,000, $500 for $100,000, or $1,000 for $200,000 or more. Visit site for full details.⁸ <p>New customers only. Earn a cash bonus (the "Welcome Bonus") when you deposit and maintain funds with partner banks on the Raisin platform. Customers will receive a Welcome Bonus of $40 for depositing between $10,000 and $24,999; $100 for depositing between $25,000 and $49,999; $200 for depositing between $50,000 and $99,999; $425 for depositing between $100,000 and $199,999; and $900 for depositing $200,000 or more. If the Qualifying Deposit balance declines at any time during the maintenance period below the minimum required for a bonus tier, the customer will be placed in the bonus tier corresponding to the lowest Qualifying Deposit balance maintained during that period. </p><p>Savings + CD Boost: Customers eligible for the Welcome Bonus may earn an additional bonus by opening a product in a second product category. To qualify, customers must deposit at least $1,000 into the secondary product category within 14 days of their initial deposit and maintain balances over $1,000 in both categories through 90 days from the initial deposit date.</p><p>For the purposes of this promotion, High-Yield Certificates of Deposit constitute one product category; No-Penalty CDs and Callable CDs constitute a second product category; and Savings Accounts (including Money Market Deposit Accounts, High-Yield Savings Accounts, and Rate Lock Savings Accounts) constitute a third product category. Savings + CD Boost eligibility is determined by your Welcome Bonus tier: customers depositing between $10,000–$24,999 receive an additional $10; $25,000–$49,999 receive an additional $25; $50,000–$99,999 receive an additional $50; $100,000–$199,999 receive an additional $75; and $200,000 or more receive an additional $100. </p><p>The Savings + CD Boost is optional and paid in addition to the Welcome Bonus. To qualify for the Welcome Bonus and Savings + CD Boost, your first deposit must be initiated between September 1, 2026, and October 31, 2026, by 11:59 PM ET, and the promo code STACK must be entered at the time of sign-up. Only funds deposited within 14 days of the initial deposit date and maintained with partner banks on the Raisin platform for 90 days of the initial deposit date will be eligible for the Welcome Bonus and Savings + CD Boost. Bonus cash will be credited directly to your Cash Account within 30 days of meeting all qualifying terms. This offer is available to new customers only, is non-transferable, and may not be combined with any other bonus offers. Raisin may modify or end this offer at any time and may withhold or revoke bonuses in cases of fraud, abuse, or violation of these terms or Raisin’s Terms of Service.</p>

Limited-Time Offer

2026 AWARD WINNER Best Checking and Savings Combo

SoFi Checking and Savings

5.0

Open Account on SoFi's secure website, Member FDIC

APY

4.40%

Minimum Balance for APY

Bonus Offer

Up to $400

Why We Like It

Limited-Time Offer: Earn a $50 or $400 cash bonus¹ New and existing Checking and Savings members who have not previously enrolled in Direct Deposit with SoFi are eligible to earn a cash bonus of either $50 (with at least $1,000 total Eligible Direct Deposits received within 25 calendar days of your first Eligible Direct Deposit of $1 or more) OR $400 (with at least $5,000 total Eligible Direct Deposits received within 25 calendar days of your first Eligible Direct Deposit of $1 or more). Cash bonus amount will be based on the total amount of Eligible Direct Deposit received within 25 calendar days of your first Eligible Direct Deposit of $1 or more. If you have satisfied the Eligible Direct Deposit requirements but have not received a cash bonus in your Checking account, please contact us at 855-456-7634 with the details of your Eligible Direct Deposit. Direct Deposit Promotion begins on 5/15/2026 and will be available through 12/31/2026. Full terms at <a href="https://www.sofi.com/banking/">sofi.com/banking</a>. SoFi Checking and Savings is offered through SoFi Bank, N.A., Member FDIC. SoFi members with Eligible Direct Deposit can earn 3.30% annual percentage yield (APY) on savings balances (including Vaults) and 0.50% APY on checking balances. There is no minimum Eligible Direct Deposit amount required to qualify for the 3.30% APY for savings (including Vaults). Members without Eligible Direct Deposit will earn 0.80% APY on savings balances (including Vaults) and 0.50% APY on checking balances. Interest rates are variable and subject to change at any time. These rates are current as of 9/23/26. Fees may reduce earnings. Additional information can be found at <a href="https://d32ijn7u0aqfv4.cloudfront.net/wp/wp-content/uploads/raw/SoFi-Bank-Rate-Sheet-September-23-2026.pdf">http://www.sofi.com/legal/banking-rate-sheet</a>. plus a boosted up to 4.40% APY² Earn up to 4.40% Annual Percentage Yield (APY) on one SoFi Savings account with a 1.10% APY Boost (added to the 3.30% APY as of 10/20/26) for up to 6 months. Open your first SoFi Checking and Savings account and receive eligible direct deposits OR qualifying deposits of $5,000 every 31 days by 12/31/27. Rates are variable, subject to change. Terms apply at <a href="https://www.sofi.com/banking/#4">sofi.com/banking#4</a>. SoFi Bank, N.A. Member FDIC. on Savings (3.30% APY¹ New and existing Checking and Savings members who have not previously enrolled in Direct Deposit with SoFi are eligible to earn a cash bonus of either $50 (with at least $1,000 total Eligible Direct Deposits received within 25 calendar days of your first Eligible Direct Deposit of $1 or more) OR $400 (with at least $5,000 total Eligible Direct Deposits received within 25 calendar days of your first Eligible Direct Deposit of $1 or more). Cash bonus amount will be based on the total amount of Eligible Direct Deposit received within 25 calendar days of your first Eligible Direct Deposit of $1 or more. If you have satisfied the Eligible Direct Deposit requirements but have not received a cash bonus in your Checking account, please contact us at 855-456-7634 with the details of your Eligible Direct Deposit. Direct Deposit Promotion begins on 5/15/2026 and will be available through 12/31/2026. Full terms at <a href="https://www.sofi.com/banking/">sofi.com/banking</a>. SoFi Checking and Savings is offered through SoFi Bank, N.A., Member FDIC. SoFi members with Eligible Direct Deposit can earn 3.30% annual percentage yield (APY) on savings balances (including Vaults) and 0.50% APY on checking balances. There is no minimum Eligible Direct Deposit amount required to qualify for the 3.30% APY for savings (including Vaults). Members without Eligible Direct Deposit will earn 0.80% APY on savings balances (including Vaults) and 0.50% APY on checking balances. Interest rates are variable and subject to change at any time. These rates are current as of 9/23/26. Fees may reduce earnings. Additional information can be found at <a href="https://d32ijn7u0aqfv4.cloudfront.net/wp/wp-content/uploads/raw/SoFi-Bank-Rate-Sheet-September-23-2026.pdf">http://www.sofi.com/legal/banking-rate-sheet</a>. with +1.10% APY Boost) for up to 6 months when you open a new account and set up eligible direct deposits. Terms apply.
No account, overdraft, or monthly fees⁴ We do not charge any account, service, or maintenance fees for SoFi Checking and Savings. We do charge transaction fees for outgoing wire transfers, Instant Transfers, and global remittance transfers. Our fee policy is subject to change at any time. See the SoFi Bank Fee Sheet for details at <a href="http://sofi.com/legal/banking-fees/">sofi.com/legal/banking-fees/</a>.
Get your paycheck up to two days early with direct deposit⁵ Early access to direct deposit funds is based on the timing in which we receive notice of impending payment from the Federal Reserve, which is typically up to two days before the scheduled payment date, but may vary.
Access additional FDIC insurance up to $3 million⁶ SoFi Bank is a member FDIC and does not provide more than $250,000 of FDIC insurance per depositor per legal category of account ownership, as described in the FDIC’s regulations. Any additional FDIC insurance is provided by the SoFi Insured Deposit Program. Deposits may be insured up to $3M through participation in the program. See full terms at <a href="http://sofi.com/banking/fdic/sidpterms">SoFi.com/banking/fdic/sidpterms</a>. See list of participating banks at <a href="http://sofi.com/banking/fdic/participatingbanks">SoFi.com/banking/fdic/participatingbanks</a>.
Excellent 4.3/5